Not able to login with password typed in keyboard.

[jagadwzq1]

I am facing 2 issues.
#1. I changed the windows password for a user. After that, I am not able to login if I type the password in key board. If I type same password using On-screen keyboard option of Ease of access, I am able to login.

I thought it could be issue with key board. After login, I checked all keys are working fine.

#2.Due to issue #1, I created one more user and added it to administrator group. I am able to login to windows with this new user with password typed in keyboard. But after login when i type some characters, it displays other characters. For e.g., when I type '\', it shows '#'

Any solution for these issues?

 

[Layback Bear]

It could actually be a keyboard virus/malware. I would start with a scan with Malwarebytes Anti Malware.
Malwarebytes : Malwarebytes Anti-Malware removes malware including viruses, spyware, worms and trojans, plus it protects your computer
Let us know if anything is found and what it is.

 

[jagadwzq1]

I performed a scan with Malwarebytes Anti Malware. It reported 2 issues (PUP.CrossFire.SA) for a registry key and value and 2 issues (Trojan.FakeAlert.FSA28) for a tmp file. After fixing these 4 issues also, I am facing the same login issue.

For issue#1, it is not allowing to login with keyboard only when the computer starts. Once it is started and if it locked then it allows to unlock using the password entered in keyboard.

 

[Bumpkin]

Do you have a System Restore point before this problem started? When you open System Restore, be sure to click the box in the lower left corner □ Show more restore points

Run system file checker http://www.sevenforums.com/tutorials/1538-sfc-scannow-command-system-file-checker.html?ltr=S using Option Two.

 

[Layback Bear]

Your restore points also might be infected. I would not trust them. I would recommend as a little insurance using Windows Defender Off Line. A complete long scan.
http://www.sevenforums.com/tutorials/166445-windows-defender-offline.html

 

[jagadwzq1]

System file checker did not show any threat/issues. Restore points before the problem solved issue #1. I am able to login using the password entered in keyboard when the system boots.

Issue #2 is still there. This issue could be there before this problem also. As I have not tried creating new user earlier, I did not notice it.

After system restore, I notice another behavior. When a computer is locked, password entered in either keyboard or on-screen keyboard does not work. But click 'Switch user' and then click the same user, password entered in keyboard also works.

I guess I can proceed with this behavior.

Thank you for all the responses.